Bench-vise.



J. G'. BAKER.

BENCH VISE.

APPLICATION FILED AUG-H, I914.

1,176,019. Patented Mar. 21, 1916.

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JOSEPH G'r. BAKER, 0E ALLENTOWN, PENNSYLVANIA, ASSIGNOR TO JOSEPH EDWARDDURHAM, OF PHILADELPHIA, PENNSYLVANIA.

BENCH-VISE.

Specification of Letters Patent.

Patented Mar. 21, 1916.

Application filed August 11, 1914. Serial No. 856,160.

To all whom it may concern:

Be it known that I, JOSEPH Gr. BAKER, a citizen of the United States,residing at Allentown, in the county of Lehigh and State ofPennsylvania, have invented new.

and useful Improvements in Bench-Vises, of which the following is aspecification.

My invention relates to new and useful improvements in bench vises, andhas for its object to provide an exceedingly simple and effectiveconstruction whereby the operating screw may be placed in the slide ofthe sliding jaw, and held therein without the insertion of pins, setscrews or removable collars, and when so placed in position will have acertain amount of friction exerted thereon to prevent its too-freerotation.

A further object of my invention is to provide a swiveled shoe for theclamping screw of such a vise, which is made of a single piece andadapted to be swaged onto the ball end of the clamp screw in such amanner as to give it a free universal swiveled movement withoutliability of being displaced when pressure is brought to bear thereon.

lVith these ends in view this invention consists in the details ofconstruction and combination of elements hereinafter set forth andspecifically designated by the claims.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, I will describeits construction in detail, referring by numeral to the accompanvingdrawing forming a part of this specification, in which- Figure 1, is aside elevation of one form of vise made in accordance with myimprovement, a portion of the slide and sliding jaw being sectioned awayso as to clearly illustrate the position of the operating screw therein.Fig. 2, is a front elevation of the sliding jaw, the operating screwbeing removed. Fig. 3, is a section at the line 3-3 of Fig. 1. lookingin the direction of the arrow. Fig. 4, is a section at the line H ofFig. 1, looking in the direction of the arrow. Fig. 5, is an elevationof the clamp screw, the clamp shoe being sectioned to clearly show itsposition upon the ball end of said screw. Fig. 6, is an enlarged sectionof the clamp shoe showing the tangs thereof in position, before they areset upon the ball; and Fig. 7, is a bottom plan view of the clamp .shoe.

In carrying out my invention as here embodied 1 represents a stationaryjaw, which in the design here shown has formed therewith the clamp 2 foroverlapping the edge of the bench, and 8 is the clamp screw threadedthrough the lower portion of the clamp for clamping the vise to thebench.

at represents the slide which passes through the base of the stationaryjaw in the ordinary manner, and has formed therewith the sliding jaw 5.,all of which may be of ordinary or any suitable design. The slide iscast hollow and has formed in its front end the button hole slot 6, thelower portion of which is of suflicient size to permit the collar 7 topass therethrough, while the upper portion thereof is of a diametercorresponding to the size of the bearing section 8 of the operatingscrew. Just back of the button hole slot is formed a recess 9 ofsufficient size to receive the collar 7 without contacting with the sidewalls of said recess. The collar 7 as well as the head 10 are preferablyformed integral with the operating screw 11, so that when said operatingscrew is placed in position within the slide and its jaw. there will beno tendency for either the collar or the head to become displaced. thusmaking an exceedingly simple and rigid construction.

In order that the operating screw may be held in place in the upperportion of the button hole slot against accidental displacement, aspring 12 is inserted beneath the bearing section 8 in such manner as toforce this bearing section upward and hold it in the upper portion ofthe button hole slot. This spring has the further function of putting acertain amount of friction upon the operating screw which holds thelatter against accidental rotation when the jaws are not clamped uponthe work, which is very desirable especially in large bench vises, sincethe operating handle 13 when left at certain angles has a tendency torevolve the operating screw through a portion of a revolution, andunseat the vise which is entirely overcome by my invention. In practiceI have found that this construction reduces the cost of manufacture ofdevices of this character, and gives much better results in theoperation thereof.

The second object of my invention is accomplished by casting or dropforging the clamp shoe 14: with tangs 15 on the underside thereof,surrounding an approximately semi-spherical recess 16 which latter hasan opening 17 through the upper wall thereof for the purpose hereinatferset forth. The clamp screw 3 has formed on its upper end a ball 18around which the tangs 15 of the clamp shoe are set in any well knownmanner, which arrangement will permit the shoe to have a limiteduniversal swiveled movement so as to ad ust itself to any unevennesses,when clamping the device to a wrench. The opening 17 provides convenientmeans for oiling this universal joint, and I prefer that the uppersurface ofthe shoe should be concaved as clearly shown in Fig. 6, inorder that the clamp shoe will bear upon the ball end thereof, thusincreasing its hold upon the underside of the bench as will be readilyunderstood. This form of clamp shoe will stand considerably more claming strain than such used which are split and bent around the swiveledjoint, since reasonable pressure will force the ball through the shoe ofwhich there is a tendency in a split shoe.

Of course I do not wish to be limited to the exact details ofconstruction as here shown, as these may be varied within the limits ofthe appended claims without departing from the s irit of my invention.

Having thus fully described my invention, what I claim as new anduseful, is-

1. A vise comprising a slide, a sliding or adjustable jaw provided witha button hole slot mounted on said slide, an operating screw, a head onthe outer end of said screw, a collar carried by said screw spaced fromsaid head, thereby forming a. bearing surface between said collar andhead, said collar being of a size to pass through the larger portion ofthe button hole slot, while the bearing surface of the screw is of asize to fit the smaller portion of the button hole slot, and meansengaging the operating screw and a portion of the vise for holding thebearing surface of the-operating screw in the smaller portion of thebutton hole slot.

2. A vise comprising a slide, a sliding or adjustable jaw provided witha button hole slot mounted on said slide, an operating screw, a head onthe outer end of said screw, a collar carried by said screw spaced fromsaid head, thereby forming a bearing surface between said collar andhead, said collar being of a size to pass through the larger portion ofthe button hole slot, while the bearing surface of the screw is of asize to fit the smaller portion of the button hole slot, and a coiledspring situated within the button hole slot and engaging the bearingsurface of the operating screw to hold said bearing surface within thesmaller portion of the button hole slot.

3. A vise comprising a slide, a jaw slidably mounted thereon, said jawhaving a recess therein and a button hole slotin communication.therewith, an operating screw provided with an integral head and collarspaced. to form a bearing surface, said collar being of smaller-diameterthan the larger portion of the button hole slot, said operat ing screwadapted tobe passed through the button hole slot until the bearingsurface registers therewith and the collar enters the recess, and aspring within the button hole slot for holding the bearing surface in.the smaller portion of the button hole slot.

In testimony whereof, I have hereunto affixed my signature in thepresenceof two subscribing witnesses.

JOSEPH G. BAKER.

Witnesses:

' J. EDWD. DURHAM, Jr.,

M. A. REIN SMITH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissionerof Patents, 7

Washington, I). G.

